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You searched for: Start Over Historic stream surveys Remove constraint Historic stream surveys Author Geological Survey (U.S.) Remove constraint Author: Geological Survey (U.S.) Subject Crater Lake National Park (Oregon) -- Maps, Topographic Remove constraint Subject: Crater Lake National Park (Oregon) -- Maps, Topographic Material Types Image Remove constraint Material Types: Image

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	1 map:col.; Wallis provides a color key for Rogue, Klamath, Umqua, and Lake drainage; Relief shown by contours, spot heights and shading; Datum is mean sea level; Contour interval 50 feet; "N4242-W12155/25;" ...
	Citation Citation Citation Abstract Copy Title: Oregon, Crater Lake National Park and vicinity: 25 minute series Author: Geological Survey (U.S.) Year: 1946, 2008, 2009 1 map:col.; Wallis provides a color key for Rogue, Klamath, Umqua, and Lake drainage; Relief shown by contours, spot heights and shading; Datum is mean sea level; Contour interval 50 feet; "N4242-W12155/25;" Includes bibliographic references (leaves 118- 120) Title: Oregon, Crater Lake National Park and vicinity: 25 minute series Author: Geological Survey (U.S.) Year: 1946, 2008, 2009 1 map:col.; Wallis provides a color key for Rogue, Klamath, Umqua, and Lake drainage; Relief shown by contours, spot heights and shading; Datum is mean sea level; Contour interval 50 feet; "N4242-W12155/25;" Includes bibliographic references (leaves 118- 120)